Device and method of electro-synthesis coupled membrane separation

Abstract

The invention provides a device and a method of electro-synthesis coupled membrane separation. The device comprises an electrolytic cell anode chamber connected with the anode of a power source, a cathode chamber connected with the cathode of the power source, a film unit and connecting pipelines; the membrane unit is a membrane separation unit or a membrane supply unit; one or more ion exchange membranes are arranged in the membrane unit; the ion exchange membranes are the same membranes or different membranes arranged at intervals; the anode chamber and the cathode chamber of the electrolytic cell are connected with the membrane unit by use of the connecting pipelines, respectively. The device is capable of realizing single diffusion, double diffusion, supply synthesis diffusion or supply diffusion between the anode chamber and the cathode chamber of the electrolytic cell, and used for selectively allowing target products or the precursor substances of the target products to pass through or reducing the accumulated inhibition effect of the target products in the system.

Description

technical field [0001] The invention belongs to the technical field of electrochemical synthesis, in particular to an improved electrosynthesis coupled membrane separation device and method for recovering high value-added products using microbial electrosynthesis technology. Background technique [0002] Bio-electrochemistry (BES) is the conversion of chemical energy contained in organic waste or biomass into electricity or hydrogen through microbial fuel cells (MFC) or electrolysis cells (MEC). / Process of chemical products. Compared with traditional energy conversion systems, the operating conditions of bioelectrochemical synthesis are relatively mild, and the range of organic substrates that can be used is relatively wide, and rare metals are not required as catalysts. The latest research on the production of products by bioelectrosynthesis has greatly expanded the application range of BES. However, there are still some problems restricting the application of bioelect...

AI Technical Summary

Problems solved by technology

However, there are still some problems restricting the application of bioelectrochemical technology, such as alternative materials for electrodes, product separation devices, and catalyst selection and innovative reactor design, etc.

[0003] Electrochemical membrane reactor is a new type of high-efficiency sewage treatment and reuse technology that organically combines membrane separation technology and traditional electrochemical synthesis technology. It has been developed rapidly, but there are still some factors restricting the large-scale application of electrochemical membrane reactors, such as the small membrane area connected between the cathode chamber and the anode chamber, which limits the efficiency of mass transfer and product recovery. In addition, the membrane type is single , so that the application of electrochemical membrane reactor has certain limitations

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